GATE (Graduate Aptitude Test in Engineering) Psychology Research Methods and Statistics-Designing Research Study Material (Page 4 of 7)

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Variables: Control and Types of Variables

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Garett described variables as attributes or qualities which exhibit difference in magnitude, and which vary along some dimensions.

Control of Variables

According to Townsend, the attempt to produce phenomena in pure condition by regulating its environment is called controlling the situation or controlling the experiment. Carry over effects encountered in experiment are often such that their control in sense of equalizing their effects over all values of the independent variables is impossible.

Types of Variables

Continuous, Discrete and Categorical Variable

A continuous variable may be defined as a quan…

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Extraneous Variables: Lurking and Confounding

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Extraneous Variables: Lurking and Confounding

Extraneous variables are present in the experiment that are not being studied.

Effect of extraneous variables can be accounted only after the experiment is done. Extraneous variables are usually grouped into th…

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